Analysis
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max time kernel
140s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
22-06-2024 11:33
Static task
static1
Behavioral task
behavioral1
Sample
01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll
Resource
win10v2004-20240611-en
General
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Target
01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll
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Size
383KB
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MD5
01efee1f8ba0f9c17dfb746326ab908c
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SHA1
d34b9682536ccfb29769cdc0f7cfc4028f61702f
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SHA256
659dc79f8a18c659e6388d43f961532d496de9a26b5ee4d350e40f8454720db3
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SHA512
8d828a022cb6a491b124a89f61123f9a99a071a1e3db9217359ffdb0b9b3549c773de22cf3f983f1f232f2fe38f3e4dccd8ea87cbc69eb928e6d4f59e72514bf
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SSDEEP
6144:WiE8HElJNKlrbLcbR/Nq8RyRn7WjwHaRHculd/c8QHjx9QL6lETll+sydJf+w6:WiE8HEvc1bLm88RyB7GwHaRHVldE8QXG
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ysqvmnorbmsqnvyhk = "C:\\Windows\\System32\\regsvr32.exe /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll\"" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{348D6598-B307-309E-5E66-492EBEEA1751} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{348D6598-B307-309E-5E66-492EBEEA1751}\NoExplorer = "1" regsvr32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "431916052" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a026f91a98c4da01 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{45575B6D-308B-11EF-90FA-CACDD8B22A4F} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31114392" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000aa9cad4c9673b74c9a378d3b281cdc37000000000200000000001066000000010000200000005a6097e506fc7efca3a1a69a5a67989344abf1091da8bd657fc69e9c0a5d233d000000000e8000000002000020000000ebe4f451d750775b33107ed4713c762fbe4091d533f2c378e78395235716f7b620000000c6ae69b5f786f75fec10c9c47e2c1f88f4942ff2b621bce3fa94cc92e708024a4000000041da1c0b66d916ae0f64275ddf23cb39ef852b807e6213a1cd3e65d327e5be9eee4f6a2fa10112a0bc4b9e6295600452592484f89e4549f984d6a16692609ecd iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31114392" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000aa9cad4c9673b74c9a378d3b281cdc370000000002000000000010660000000100002000000083f33465da05318d47375101ce6631d1af66a3e1876e1f1957edcd1e6d22e633000000000e8000000002000020000000cd5d51e924d5376b879845f2c5a8140a205fe6f91efc98ddf0f8b2cc62793fc12000000017eb348c71d6a8f67898c87618d33585a99982ef9f9f14da3cbde31692a291814000000067bdd5b6cae82e5404c573411a1ab4106e5839bc5cc2bf2e36f9bddb3f044626b417c90ec2923a3b714f81f08ff7974299ba5590b2e7ac00ee8fb4eed005a7e1 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 9052001b98c4da01 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "431916052" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "434259791" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31114392" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "425820994" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{348D6598-B307-309E-5E66-492EBEEA1751} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{348D6598-B307-309E-5E66-492EBEEA1751}\ = "blueskyadagency browser enhancer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{348D6598-B307-309E-5E66-492EBEEA1751}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{348D6598-B307-309E-5E66-492EBEEA1751}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{348D6598-B307-309E-5E66-492EBEEA1751}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll" regsvr32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4300 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4300 iexplore.exe 4300 iexplore.exe 2784 IEXPLORE.EXE 2784 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4648 wrote to memory of 4680 4648 regsvr32.exe 90 PID 4648 wrote to memory of 4680 4648 regsvr32.exe 90 PID 4648 wrote to memory of 4680 4648 regsvr32.exe 90 PID 4300 wrote to memory of 2784 4300 iexplore.exe 93 PID 4300 wrote to memory of 2784 4300 iexplore.exe 93 PID 4300 wrote to memory of 2784 4300 iexplore.exe 93
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\01efee1f8ba0f9c17dfb746326ab908c_JaffaCakes118.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4680
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C:\Program Files (x86)\Internet Explorer\ielowutil.exe"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding1⤵PID:1756
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4300 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4300 CREDAT:17410 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2784
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1416,i,15316930299780304231,7592852768794498680,262144 --variations-seed-version --mojo-platform-channel-handle=4500 /prefetch:81⤵PID:4976
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee